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GOODWILL AND OTHER INTANGIBLE ASSETS - Schedule of Estimated Aggregate Amortization Expense (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Jun. 30, 2021
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Dec. 31, 2019
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]            
Remainder of 2021 $ 303          
2022 1,105          
2023 935          
2024 766          
2025 596          
Thereafter 781          
Total $ 4,486 $ 4,800 $ 5,458 $ 5,803 $ 6,160 $ 7,180